20811888

素因数分解:

$2^4\times 3^2\times {\mathrm{113}}^1\times {\mathrm{1279}}^1$

素因数の和:1406

約数の個数: 60

約数和(自身を含む): 58805760

約数和(自身を除く): 37993872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 113, 144, 226, 339, 452, 678, 904, 1017, 1279, 1356, 1808, 2034, 2558, 2712, 3837, 4068, 5116, 5424, 7674, 8136, 10232, 11511, 15348, 16272, 20464, 23022, 30696, 46044, 61392, 92088, 144527, 184176, 289054, 433581, 578108, 867162, 1156216, 1300743, 1734324, 2312432, 2601486, 3468648, 5202972, 6937296, 10405944, 20811888]

約数ペア:

[(1, 20811888), (2, 10405944), (3, 6937296), (4, 5202972), (6, 3468648), (8, 2601486), (9, 2312432), (12, 1734324), (16, 1300743), (18, 1156216), (24, 867162), (36, 578108), (48, 433581), (72, 289054), (113, 184176), (144, 144527), (226, 92088), (339, 61392), (452, 46044), (678, 30696), (904, 23022), (1017, 20464), (1279, 16272), (1356, 15348), (1808, 11511), (2034, 10232), (2558, 8136), (2712, 7674), (3837, 5424), (4068, 5116)]